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TO ALL WHOM IT MAY CONCERN:

Be it known that I, NAPOLEON B. Rnrxonns, of Auburn, in the county of Cayuga, and State of New- York, have invented certainncw and useful improvements in Machines for Shearing Metals into Designated Shapes, Forms, or Patterns, and that the following is a full, clear, and exact description of the same, reference being had to theaccompanying drawings, making a part of this specification, in which- Figure 1 represents tin-elevation of the shears from one of its sides; and

Figure 2 represents a top planet the same.

Similar letters of reference, where they occur in the separate figures, denote like parts of the machine in both of the figures. v

This machine is designed more especially for cutting sickle sections oflcnives from shects or strips of steel. And as thesesections or knives are of an irregular form, mainly triangular, but really rhoniboidal, and having six sides, and as many angles, some of which are parallel and equal; and as they must be of'v'ery exact form where used in a series capacity, as they invariably are, the cutting of them into these shapes and sizes requires a nicely adjusted and regulated machine to hold the strip firmly against the action of the shearing cutters. v v l I am aware that mnchinesha-ve been made for cutting glaciersv tags into a triangular form from strips, but the lightness of the material from which the tags are cut, and the exactness of their shape or, form, only. so that they are pointed, being so immaterial, I do not regard such machines as involving my invention, which consists in'cutting the seetions'into exactlyuniform sizes and forms, as the machine may be adjusted for, andrnaking the gauges notonly guides, but holding devices for holding the strip of steel against the action of the shears. i

-To enable others skilled in the art to make and use my invention, I will proceed to describe the same with reference to the drawings. i v

A represents a bed or frame to which both the movable shear B and the stationary (though adjustable) one C, are attached. The movable shear maybe operated in any of the usual well-known ways. The stationary shear is arranged on a bed-plate, D, that is, made adjustable by the set-screws aa, to adapt its shear-blade to the movable one. Inthe bed-piece D there is fixed a gauge-pin, 12, against which the edge of the strip from, which 'the sections are to be cut is pressed and held by the action of the shear-blades, which tend to push the .strip inthat direction. Upon the other side of the blades there is a gauge, 0, composed of two jaws,0r of a slot or opening, e, into which the angular corner of the strip of steel is placed, and held whilst the shears sever a section from said strip. The strip is turned over every time a section is cut off, and the corner of the strip each time placed in the slot e, and its edge against the pin 6, which defines. the angle or obliquity of the cut, and at the same time holds the strip of steel firmly against the action oflthe shear-blades. The gauge 0 is susceptible of two adjustments, independent of the adjustment that it receives from the bed-piece D, to which it is ultimately attached, as follows: The gauge e is fastened to and adjusted on an arm or restf, which arm or rest is adjustable on the bed-piece D, and the bed-piece is adjustable on the frame A, so that th ejgreate st accuracy is attained in cutting the sections to a uniform size and shape and given obliquity to the sides 0? the section that are to make its two cutting edges. The sections may be cut with two parallel sides and two sides not parallel, orin the shape of a triangle with the apex cut oif'parallel with the base; or of a trapezoidal, rhomboidal, or any other irregular form, such as is used in making sections for reaping machines, the capacity and adjustment being adequateto such variedtforms either in whole or in part.

Having thus fully described my invention, what'I claim, is'- In ccmhination with a sheai ing machine for shearing stiff metals, the guides and gauges b c, constructed, arranged-and operating for cutting ofi' angular sections to adjusted shape, form, and size, substantially as herein described and represented.

n. B. nnyNoms Witnesses:

Jenn S. CLAnr, Funnrnrcn VAN PAfITEN. 

